Oh, good. I thought it was just me
"...a big blank white space between lines of type?"
Oh, good. I thought it was just me. Usually, since I run with javascript and plug-ins turned off (old paranoid habits), I see that kind of thing, but the videos or whatever appear when I turn them on. Here: nothing. Perhaps it's a comment on the inherent dangers of minimalism? Stay tuned...?
Eventually the video was properly imbedded. It looked like this: